Philippines (Republic) Agricultural Productivity Commission & Seminar Workshop on Extension Administration and Supervision (1969 : Quezon City). (1969). Minutes of the Seminar proceedings ... Asian Labor Education Center, University of the Philippines, Diliman, Quezon City, Sept. 22-28, 1969. The Commission.

Philippines (Republic) Agricultural Productivity Commission and Seminar Workshop on Extension Administration and Supervision (1969 : Quezon City). Minutes of the Seminar Proceedings ... Asian Labor Education Center, University of the Philippines, Diliman, Quezon City, Sept. 22-28, 1969. [Manila]: The Commission, 1969.

Philippines (Republic) Agricultural Productivity Commission and Seminar Workshop on Extension Administration and Supervision (1969 : Quezon City). Minutes of the Seminar Proceedings ... Asian Labor Education Center, University of the Philippines, Diliman, Quezon City, Sept. 22-28, 1969. The Commission, 1969.